Nanocellulose-mediated hybrid polyaniline electrodes for high performance flexible supercapacitors

Zheng, Wenzheng; Lv, Ruihua; Na, Bing; Liu, Hesheng; Jin, Tianxiang; Yuan, Dingzhong

doi:10.1039/c7ta01990d

Cited by 80 publications

(43 citation statements)

References 27 publications

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“…Note that bending of the Zn-ion battery was realized by a mini mechanical testing machine under a controlled program. [49] The bending only has a slight influence on the electrochemical performance of the Zn-ion battery, as demonstrated by the CV curves and galvanostatic charge-discharge (GCD) profiles at various bending angles from 0 to 180 (Figure 4a,b). The specific capacity is maintained at 121.3 mAh g À1 while being bended to 180 at a current density of 2 A g À1 , very close to the initial value (123.5 mAh g À1 ).…”

Section: Resultsmentioning

confidence: 97%

“…The Zn‐ion battery can be well operated under bending, thanks to the flexibility of the cathode, anode, and gel electrolyte. Note that bending of the Zn‐ion battery was realized by a mini mechanical testing machine under a controlled program . The bending only has a slight influence on the electrochemical performance of the Zn‐ion battery, as demonstrated by the CV curves and galvanostatic charge‐discharge (GCD) profiles at various bending angles from 0 to 180° (Figure a,b).…”

Section: Resultsmentioning

confidence: 99%

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Nanostructured Polypyrrole Composite Aerogels for a Rechargeable Flexible Aqueous Zn‐Ion Battery with High Rate Capabilities

Xie

et al. 2019

Energy Tech

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Aqueous Zn‐ion batteries usually suffer from an inferior rate capability because of high internal resistance. Herein, nanostructured polypyrrole (PPy) composite aerogels are fabricated as the flexible cathode of an aqueous Zn‐ion battery. Highly porous composite aerogels enable easy ion diffusion toward nanostructured PPy and a low internal resistance of 1.5 Ω cm−2. A high power density of 11.7 kW kg−1 is thus achieved for the aqueous Zn‐ion battery at a satisfactory energy density of 64.0 Wh kg−1, superior to other aqueous batteries and supercapacitors. The Zn‐ion battery exhibits good flexibility, as illustrated by high‐capacity retention of 80.3% after 1000 bending cycles. The flexible Zn‐ion battery with high rate capabilities could find practical applications in wearable electronics requiring rapid charge.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Nanostructured Polypyrrole Composite Aerogels for a Rechargeable Flexible Aqueous Zn‐Ion Battery with High Rate Capabilities

Xie

et al. 2019

Energy Tech

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“…[7][8][9] Polyaniline (PANI) is a conductive polymer which has been widely used to develop flexible pseudocapacitors because of its simplistic preparation, low cost, high electrical conductivity, and fast redox kinetics. [10][11][12][13][14][15] During charging and discharging process, PANI chains experience frequent swelling and shrinking due to doping and de-doping of counter-ions. This phenomenon causes structural instability and eventually results in fast capacitance decay.…”

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confidence: 99%

Flexible supercapacitor based on three‐dimensional cellulose/graphite/polyaniline composite

et al. 2018

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Summary Fast charge‐discharge rate and high areal capacitance, along with high mechanically stability, are the pre‐requisites for flexible supercapacitors to power flexible electronic devices. In this paper, we have used three‐dimensional polyacrylonitrile graphite foam as flexible current collector for electro‐deposition of polyaniline (PANI) nanowires. The graphite foam with PANI was then used to fabricate symmetric supercapacitor. The fabricated supercapacitor in the three‐electrode system shows a high specific capacitance (Csp) of 357 F.g−1 and areal capacitance (Careal) of 7142 mF.cm−2 in 1 M H2SO4 at current density of 80 mA.cm−2, while using two‐electrode system, it shows Csp of 256 F.g−1 and Careal of 5120 mF.cm−2 in 1 M H2SO4 at current density of 100 mA.cm−2. The current density of 100 mA.cm−2 is up to 10 folds higher than reported current densities of many PANI‐based supercapacitors. The high capacitance can be attributed to the spongy network of PANI‐NWs on three‐dimensional graphite surface which provides an easy path for electrolyte ions in active electrode materials. The developed supercapacitor shows specific energy of 64.8 Whkg−1 and a specific power of 6.1 kWkg−1 with a marginally decrease of 1.6% in Csp after 1000th cycles, along with coulombic efficiency retention of 87% in polyvinyl alcohol/H2SO4 gel electrolyte. This flexible supercapacitor exhibits great potential for energy storage application.

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“…In the past decades, the CPs are extensively explored for flexible supercapacitor application due to their reversible faradic redox nature, high charge density and lower cost as compared with the expensive metal oxides ,,,. Among all kinds of CPs, polyaniline,, polypyrrole, and poly(3,4‐ethylenedioxythio phene) have been widely studied as active electrode materials for flexible SCs due to their high flexibility, ease in fabrication and high pseudocapacitance. Unfortunately, the poor cycle stability of CPs greatly restricts its practical utilization .…”

Section: The Composite Materials Of Conductive Polymers Used As Fleximentioning

confidence: 99%

Conducting Polymer Nanostructures and their Derivatives for Flexible Supercapacitors

Cheng

Meng

Wei

2018

Israel Journal of Chemistry

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This review provides a brief summary of the recent research developments in the fabrication and application of conducting polymer nanostructures and their derivatives as electrodes for flexible supercapacitors (SCs). By controlling the nucleation and growth process of polymerization, conducting polymers (CPs) with different nanostructures can be prepared by employing chemical polymerization, electrochemical polymerization and photo-induced polymerization. These CPs (such as polyaniline and polypyrrole) with special nanostructures possess high capacitance, superior rate capability ascribed to large electrochemical surface, and optimal ion diffusion path in the ordered nanostructures.The composites of nano-structured conducting polymer and some conductive flexible substrates (such as carbon nanotube film and graphene film) are proved to be ideal electrode materials for high performance flexible SCs. Furthermore, high N-containing CPs are very prospective for preparing Ndoped carbon materials used as flexible electrodes for flexible SCs. With respect to the extra pseudo-capacitance induced by N atoms and superior stability derived from the conjugated graphitic structure of carbon materials, the obtained flexible SCs based on N-doped carbon materials could achieve high capacitance, high rate performance, and superior cycling stability. Figure 1. Specific power against specific energy, also called a ragone plot, for various electrical energy storage devices. Reproduced with permission from ref. 4.

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Nanocellulose-mediated hybrid polyaniline electrodes for high performance flexible supercapacitors

Abstract: Cellulose, abundant in nature, is very attractive for application in energy storage devices.

Cited by 80 publications

References 27 publications

Nanostructured Polypyrrole Composite Aerogels for a Rechargeable Flexible Aqueous Zn‐Ion Battery with High Rate Capabilities

Nanostructured Polypyrrole Composite Aerogels for a Rechargeable Flexible Aqueous Zn‐Ion Battery with High Rate Capabilities

Flexible supercapacitor based on three‐dimensional cellulose/graphite/polyaniline composite

Conducting Polymer Nanostructures and their Derivatives for Flexible Supercapacitors

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